Best Includes Source SDK Games on Steam
| Name | Release Date | Current Players | All-Time Peak | Rating | |
|---|---|---|---|---|---|
|
Garry's Mod | 29 Nov, 2006 | 27 729 | 38 330 | 96.02 |
|
Left 4 Dead 2 | 16 Nov, 2009 | 22 402 | 56 655 | 96.73 |
|
Counter-Strike: Source | 1 Nov, 2004 | 11 568 | 12 768 | 95.05 |
|
Half-Life 2 | 16 Nov, 2004 | 987 | 3 630 | 96.36 |
|
No More Room in Hell | 31 Oct, 2013 | 723 | 970 | 88.54 |
|
Portal | 10 Oct, 2007 | 606 | 1 811 | 97.15 |
|
Black Mesa | 6 Mar, 2020 | 567 | 1 968 | 93.94 |
|
Left 4 Dead | 17 Nov, 2008 | 425 | 1 651 | 94.56 |
|
Day of Defeat: Source | 12 Jul, 2010 | 328 | 677 | 89.54 |
|
Alien Swarm: Reactive Drop | 20 Apr, 2017 | 276 | 664 | 92.70 |
|
Fistful of Frags | 9 May, 2014 | 206 | 206 | 89.64 |
|
Selaco | 30 May, 2024 | 195 | 1 104 | 88.35 |
|
Half-Life 2: Episode Two | 10 Oct, 2007 | 189 | 530 | 95.08 |
|
Half-Life 2: Deathmatch | 1 Nov, 2004 | 156 | 274 | 88.37 |
|
Astro Colony | 7 Nov, 2022 | 146 | 742 | 79.69 |
|
Half-Life 2: Episode One | 1 Jun, 2006 | 142 | 517 | 93.61 |
|
Pool Nation FX Lite | 7 Dec, 2015 | 124 | 308 | 69.82 |
|
Zombie Panic! Source | 3 Oct, 2008 | 40 | 74 | 82.32 |
|
Pirates, Vikings, and Knights II | 12 Feb, 2010 | 28 | 49 | 85.06 |
|
Day of Infamy | 23 Mar, 2017 | 23 | 59 | 81.05 |
|
Battle Grounds III | 30 Jun, 2019 | 14 | 69 | 82.62 |
|
Absorber | 9 Jul, 2023 | 9 | 70 | 69.30 |
|
BrainBread 2 | 9 Mar, 2022 | 9 | 25 | 71.47 |
|
Double Action: Boogaloo | 23 Oct, 2014 | 8 | 27 | 90.37 |
|
Kreedz Climbing | 15 Jun, 2017 | 4 | 10 | 78.28 |
|
Rise of the Triad | 31 Jul, 2013 | 3 | 23 | 64.55 |
|
Kingdom of Atham: Crown of the Champions | 12 Jan, 2024 | 2 | 26 | 73.97 |
|
Dino Hazard: Chronos Blackout | 22 Dec, 2023 | 1 | 10 | 80.05 |
|
Sunrise: survival | 3 Aug, 2017 | 1 | 19 | 49.91 |
|
Empires Mod | 28 Jul, 2008 | 1 | 57 | 81.72 |
|
Learn to Dodge | 2024 | 1 | 2 | |
|
Silent Escape: Induction | Coming soon | 0 | 0 | |
|
A Day For A Kitten | 29 Nov, 2017 | 0 | 0 | 63.49 |
|
Paperplanes | Coming soon | 0 | 0 | |
|
Infestus | To be announced | 0 | 0 | |
|
Last Story: Dungeon | To be announced | 0 | 0 | |
|
Block Shock | 6 Feb, 2018 | 0 | 0 | 27.78 |
|
Portal Versus | To be announced | 0 | 0 | |
|
Thanksgiving Content Pack | 23 Nov, 2016 | 0 | 0 | |
|
Squigley | 2024 | 0 | 0 | |
|
Estranged: Act I | 16 Jan, 2014 | 0 | 0 | 90.41 |
|
AfterMas (余波) Demo | Coming soon | 0 | 0 | |
|
Lost Along The Way | June 2024 | 0 | 0 | |
|
Attack on Titan - Costume Set - Japanese New Year | 6 Dec, 2016 | 0 | 0 | 0.00 |
|
Path to the Creator | Coming soon | 0 | 0 | |
|
Portal | 10 Oct, 2007 | 0 | 0 | |
|
Attack on Titan - Episode 3 | 27 Sep, 2016 | 0 | 0 | 64.78 |
|
Mankind's Last Stand | Coming soon | 0 | 0 | |
|
Forex Trading Master: Simulator | 10 Dec, 2018 | 0 | 1 | 49.14 |
|
B1NARY Demo | 9 Aug, 2023 | 0 | 0 |